package main

import (
	"fmt"
	"strconv"
	"strings"
)

func main() {
	num, _ := strconv.Atoi("10")
	fmt.Println(num)
	str := strconv.Itoa(10)
	fmt.Printf("str: %v\n", str)

	flag := strings.Count("golang", "go")
	fmt.Printf("flag: %v\n", flag)
	//strings.Replace()
}
